DIELECTRIC PORCELAIN COMPOSITION - DENKI KAGAKU KOGYO KK

Title:

DIELECTRIC PORCELAIN COMPOSITION

Document Type and Number:

Japanese Patent JPH0628919

Kind Code:

A

Abstract:

PURPOSE: To provide a dielectric porcelain composition having a high dielectric constant, a large quality coefficient Q, and a temperature coefficient τf of resonance frequency of almost zero, and suitable for a microwave region.

CONSTITUTION: A titanium, barium, lead, lanthanum, samarium, and gadolinium dielectric porcelain composition is expressed by a formula: a.{(1-w).BaO, w.PbO}.b.TiO2.c.{x.La2O3, y.Sm2O3, z.Gd2O3}, wherein (a), (b), (c), (w), (x), (y), and (z) represent mole ratios; a+b+c=1; 0.1<a<0.2; 0.6<b<0.8; 0.1<c<0.2; 0.001<w<0.25; x+y+z=1; 0.02<x<0.75; 0.02<y<0.95; and 0.02<z<0.55.

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Inventors:

TAKAGI TOICHI
INOMATA HIROSHI
AIZAWA KAZUHIRO
AMETANI KOUHEI

Application Number:

JP22863891A

Publication Date:

February 04, 1994

Filing Date:

August 14, 1991

Export Citation:

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Assignee:

DENKI KAGAKU KOGYO KK

International Classes:

C04B35/46; H01B3/12; H01P7/10; (IPC1-7): H01B3/12; C04B35/46; H01P7/10

Next Patent: DIELECTRIC PORCELAIN AND MANUFACTURE THEREOF